Astronomers have spotted the most distant supernova ever seen.
A supernova is a dying star which has exploded, causing a spectacular lightshow.
Nicknamed "Mingus", this star is ten billion light-years away, which is a very long way away.
It means we are seeing the star as it would have looked ten billion years ago because that is how long it has taken the light to travel to us!
Dying stars have been seen since ancient times, but modern scientists study their light to find out some of the Universe's secrets.
Experts say Mingus will help shed light on why the increase in the size of the Universe is speeding up.